Catalyst for treating waste water, method for preparing the same and process for treating waste water
US6797184B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2003 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | Jul 10, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F11/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method is provided for oxidizing and/or decomposing organic and/or inorganic oxidizable substances in waste water by wet oxidation with a use of a catalyst, wherein the oxidizable substances are oxidized and/or decomposed with an oxygen containing gas in the presence of the catalyst under pressure such that the waste water retains the liquid phase thereof at a temperature of 50° C. to less than 170°C.; the catalyst contains activated carbon; and the oxygen concentration is controlled in an exhaust gas in the range from 0 to 5 vol %. The present inventive method is capable of treating waste water efficiently for a long period in a stable manner at reduced temperatures as compared with the substantially higher temperatures and pressures used in many of the prior art methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.